Arm exerciser



FIG. 1 is a front perspective view of an arm exerciser showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a side elevational view of the side opposite that shown in FIG. 5;

FIG. 7 is a front perspective view of a modified form of the design shown in FIGS. 1 through 6; and,

FIG. 8 is a rear perspective view thereof. 

The ornamental design for an arm exerciser, as shown and described. 